/*

 * A.cxx
 *
 *  Created on: 3:36:43 PM Oct 14, 2012
 *  Author: Pallab
 *
 * "I have not failed, I have just found 10000 ways that won't work.
*/

#include <iostream>
#include <algorithm>
#include <vector>
#include <sstream>
#include <fstream>
#include <string>
#include <list>
#include <map>
#include <set>
#include <queue>
#include <deque>
#include <stack>
#include <functional>
#include <bitset>
#include <iomanip>

#include <ctime>
#include <cassert>
#include <cstdio>
#include <cmath>
#include <cstring>
#include <climits>
#include <cstring>
#include <cstdlib>

using namespace std;

#define foR(i1,st,ed) for(int i1 = st , j1 = ed ; i1 < j1 ; ++i1 )
#define fo(i1,ed) foR( i1 , 0 , ed )
#define foE(i1,st,ed) foR( i1, st, ed+1 )
#define foit(i, x) for (typeof((x).begin()) i = (x).begin(); i != (x).end(); i++)
#define bip system("pause")
#define Int long long
#define pb push_back
#define SZ(X) (int)(X).size()
#define LN(X) (int)(X).length()
#define mk make_pair
#define SET( ARRAY , VALUE ) memset( ARRAY , VALUE , sizeof(ARRAY) )
#define line puts("")

inline void wait(double seconds){
	double endtime = clock() + (seconds * CLOCKS_PER_SEC);
	while ( clock() < endtime ){
		;
	}
}
#define T int
inline T fastIn(){
	register char c = 0;
	register T a = 0;
	while ( c < 33 )
		c = getchar();
	while ( c > 33 ){
		a = (a * 10) + (c - '0');
		c = getchar();
	}
	return a;
}
double x,y,z;
inline void read(){
	cin>>x>>y>>z;
}
const double eps = 1e-12;
inline void proc(){
	double retval = ( ( z/(x+y) )*x )+( (x-y)*(z/(x+y)) )+eps;
	printf("%.0lf\n",retval);
}
int main(){
	int kase = 1;
#if defined( xerxes_pc )
	if (!freopen("A/in1", "r", stdin))
	puts("error opening file A/in1 "),assert(0);
	kase=1;
#endif
	kase=fastIn();
	fo(i,kase){
		read();
		proc();
	}
	return 0;
}
